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[/] [or1k/] [trunk/] [gdb-5.3/] [gdb/] [ia64-linux-tdep.c] - Rev 1181
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/* Target-dependent code for the IA-64 for GDB, the GNU debugger. Copyright 2000 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "defs.h" #include "arch-utils.h" /* The sigtramp code is in a non-readable (executable-only) region of memory called the ``gate page''. The addresses in question were determined by examining the system headers. They are overly generous to allow for different pages sizes. */ #define GATE_AREA_START 0xa000000000000100LL #define GATE_AREA_END 0xa000000000010000LL /* Offset to sigcontext structure from frame of handler */ #define IA64_LINUX_SIGCONTEXT_OFFSET 192 int ia64_linux_in_sigtramp (CORE_ADDR pc, char *func_name) { return (pc >= (CORE_ADDR) GATE_AREA_START && pc < (CORE_ADDR) GATE_AREA_END); } /* IA-64 GNU/Linux specific function which, given a frame address and a register number, returns the address at which that register may be found. 0 is returned for registers which aren't stored in the the sigcontext structure. */ CORE_ADDR ia64_linux_sigcontext_register_address (CORE_ADDR sp, int regno) { if (IA64_GR0_REGNUM <= regno && regno <= IA64_GR31_REGNUM) return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 200 + 8 * (regno - IA64_GR0_REGNUM); else if (IA64_BR0_REGNUM <= regno && regno <= IA64_BR7_REGNUM) return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 136 + 8 * (regno - IA64_BR0_REGNUM); else if (IA64_FR0_REGNUM <= regno && regno <= IA64_FR127_REGNUM) return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 464 + 16 * (regno - IA64_FR0_REGNUM); else switch (regno) { case IA64_IP_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 40; case IA64_CFM_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 48; case IA64_PSR_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 56; /* user mask only */ /* sc_ar_rsc is provided, from which we could compute bspstore, but I don't think it's worth it. Anyway, if we want it, it's at offset 64 */ case IA64_BSP_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 72; case IA64_RNAT_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 80; case IA64_CCV_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 88; case IA64_UNAT_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 96; case IA64_FPSR_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 104; case IA64_PFS_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 112; case IA64_LC_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 120; case IA64_PR_REGNUM : return sp + IA64_LINUX_SIGCONTEXT_OFFSET + 128; default : return 0; } }
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